Nonlinear Optics 2019 at Hawaii launched !!!

The NLO 2019 OSA workshop has been launched. This is the periodical world-famous event on the last developments of nonlinear optics.

The NLO 2019 edition will be open to new directions as quantum nonlinear optics, machine learning, novel soft- and bio-materials,  nanomedicine and imaging applications. 

Stay tuned and do not miss the opportunity to visit Hawaii and enjoy an exciting scientific and natural environment.

The Bathynomus propinquus

Testing the new Gutenberg editor of WordPress : the visit at the Harvard Museum of Natural History

One of the most surprising animals of the last century :  the Bathynomus propinquus

Why this nice fluffy has such big eyes if he leaves in the soil of the dark deep ocean?

I first read about the giant isopod in the wonderful book “In the Blink of an Eye” by Andrew Parker, a surprising tour in evolution and the Cambrian explosion , see the enlightened game of life.

Recently, I was able to visit the Harvard Museum of Natural Hystory, where you find the footprints of writers and scientists as Stephen Jay Could, and you can meet the fluffy puppy above.

With a primitive fish (the one smiling but without glasses) at the Harvard Museum

Read many books for many years ! (and visit the museums)

Planckian signatures in optical harmonic generation and supercontinuum

Many theories of quantum gravity, as string theory, loop quantum gravity, and doubly special relativity, predict the existence of a minimal length scale and outline the need to generalize the uncertainty principle. This generalized uncertainty principle relies on modified commutation relations that – if applied to the second quantization – imply an excess energy of the electromagnetic quanta with respect to ω. Here we show that this “dark energy of the photon” is amplified during nonlinear optical process. Therefore, if one accepts the minimal length scenario, one must expect to observe specific optical frequencies in optical harmonic generation by intense laser fields. Other processes as four-wave mixing and supercontinuum generation may also contain similar spectral features of quantum-gravity. Nonlinear optics may hence be helpful to falsify some of the most investigated approaches to the unification of quantum mechanics and general relativity.

C. Conti in arXiv:1805.11716

Synchrotron resonant radiation from nonlinear self-accelerating pulses

Solitons and nonlinear waves emit resonant radiation in the presence of perturbations. This effect is relevant for nonlinear fiber optics, supercontinuum generation, rogue waves, and complex nonlinear dynamics. However, resonant radiation is narrowband, and the challenge is finding novel ways to generate and tailor broadband spectra. We theoretically predict that nonlinear self-accelerated pulses emit a novel form of synchrotron radiation that is extremely broadband and controllable. We develop an analytic theory and confirm the results by numerical analysis. This new form of supercontinuum generation can be highly engineered by shaping the trajectory of the nonlinear self-accelerated pulses. Our results may find applications in novel highly efficient classical and quantum sources for spectroscopy, biophysics, security, and metrology.

Lifu Zhang, Xiang Zhang, Davide Pierangeli, Ying Li, Dianyuan Fan, and Claudio Conti in Optics Express 26, 14710 (2018)